netdev - Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround (fwd)

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Message-ID: <48e4adb8.0807c00a.62b8.ffff87d6@mx.google.com>
Date:	Thu, 2 Oct 2008 08:17:01 -0300
From:	Dâniel Fraga <fragabr@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility
 workaround (fwd)

On Thu, 2 Oct 2008 12:42:44 +0200 (CEST)
Thomas Gleixner <tglx@...utronix.de> wrote:

>   echo sym-verbose > /debug/tracing/iter_ctrl

	Ok, this one I changed to:

echo verbose > /debug/tracing/iter_ctrl

	;) since there's no sym-verbose.

> Find below a patch which disables the tracer when the listen overflow
> is detected. It could occassionally be hit in a legimate case as well,
> but we did not come up with any better idea.

	Ok, I applied the patch, but it returns this error:

  CC      kernel/trace/ftrace.o
kernel/trace/ftrace.c: In function 'stop_event_tracer_now':
kernel/trace/ftrace.c:73: error: 'tracer_enabled' undeclared (first use in this function)
kernel/trace/ftrace.c:73: error: (Each undeclared identifier is reported only once
kernel/trace/ftrace.c:73: error: for each function it appears in.)
make[2]: *** [kernel/trace/ftrace.o] Error 1
make[1]: *** [kernel/trace] Error 2
make: *** [kernel] Error 2

> If it triggers, please cat /debug/tracing/trace to a file. Can you
> bzip2 and upload it to some place. The trace does not contain any
> sensible private information.

	Ok. Thanks.
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